Renzo511

Lewisweller .. my fear is something seized up...the  large terminal on the starter (the one that doesnt have battery feed on it) appears to burned and chewed up  , similar to a piece of metal exposed that had arching on it

JFP in PA ..finally warmed  up here in eastern Pennsylvania..

i check the voltage at the battery, the jump terminals and starter ..all the same ...

can i jump the starter to test it before taking it off ?  Or another way of testing starter before removing it ..i do hve the intake manifold off.

Thank tounJFP . Its 8 degrees here today so i will be waiting a couple days for it to warm up

Can i check voltage at starter without taking intake manifold off ?

batreries are proper voltage amd CCA

i am getting a loud click from batrery discharge relay which is at the second battery in cargo area beneath the sub woofer . That battery is new as well.

What would cause the voltage drop

on the battery cabbles ?

my concern  is the burning smell

i noticed when i was trying to start , could that have been stater burning up ?

All fuses good

ised scan tool and had a few codes that were generic (probably from pulling fuses)

chasis grounds seem ok 

Thanks loren.

my issue is 2004 cayenne s 8  cylinder wont start . Tried starting last week in the artic cold we were having in pennsylvania ( 5 degrees ) ran for 15 second then died , tried staring a few more times and engine would slowly crank but would not start . Tried starting a few more times and now cranking at all and not even a noise from starter . Did notice a burning electric smell but couldnt tell if from cab or engine area.

changed battery under seat , no change .  Replaced starter relay in E box , no change

checked second battery and have 13.4 volts , but when i try to start i get a loud click from the battery discharge  relay next to second battery .

i get full power to lights, cab, radio, fan, etc.., 

how can i test starter without pulling off intake ? Could i jumper at the relay ?

could engine have seized ?

never had starting issues until this artic cold snap .

Loren,

you mentioned a second starter relay with the 2 battery cayenne system . Where is that located ?

also is there a way to test the battery discharge relay which is connected to the second battery under the sub? 

I do not have leak down test equipment. 

Is the fact that each cylinder compression is almost identical to each other a good thing ?

Is 120 psi across all 8 cylinders  ( 1 or 2 psi variable ) on a cold engine bad ?

Checked compression this morning with car cold (65 degrees outside)

I had 120 across each cylinder ... compression seems low but I'm getting feedback Because it wasn't a warm engine but the same reading across all 8 is stable.. could my misfiring and unburned fuel be a valve issue at this point.

Is there anyway to check each cylinder is getting spark ? 

Not to familiar with coil.packs, it seems all the gas is not combusting. I have tried a few different plugs and same results

It's definitely gas. The engine chugs and sputters while driving. Somewhat loss of power.

When I come to a stop or park ,there is a strong gas smell from engine area and there are no.leaks.

I agree that it seems more ignition related.. is there some diagnostics I can do to pinpoint the cause ?

 Cylinders 2,4,6,8 and 3 are the wet plugs 

Any way to diagnose ?

3 minutes ago, JFP in PA said:

If you are getting misfire codes, the plugs are wet from misfires, not richness.  If the mixture was so rich, you should throw codes associated with being overly rich.

140k miles, mafs cleaned rece

1 hour ago, JFP in PA said:

You need to scan the vehicle for fuel trim levels.

Any advice what could 5 cylinders to misfire....Plugs and coils are new

What would cause 5 injectors to be problems ?

I did have multiple random misfire codes .  Cleared them along with CEL

140k miles, mafs cleaned recently. Compression is around 170 on all 8 Except number 8 is 158

13 minutes ago, JFP in PA said:

You need to scan the vehicle for fuel trim levels.

JFP ...Should I check them at idle ? What would be normal on the 2004 Cayenne s 8 cylinder ? 

My hunch is it's running very rich 

140k miles, mafs cleaned recently. Compression is around 170 on all 8 Except number 8 is 158

5 of 8 plugs wet with gas. Idles fine but hesitates when driving mainly shifting into lower gears. This is automatic transmission. Also strong gas smell when I come to stop and put in park.

New coils and new plugs. Put new in because when I pulled last plugs 50 miles ago with same problems I assumed plugs were bad..

Black dry soot in tailpipes. My assumption is it's running rich. 

How can I balance this fuel issue ?

Get misfiring codes. No other codes. 

Checked injectors for leaks they are ok.

Could it be bad O2 sensor (s) . 

I put new plugs in today.. still running rich.

I will get pictures in morning.

If I pull the crankcase breather hose off and let it drain for a few minutes there is a puddle the size of a quarter.

I'm assuming this oil getting by is fouling my plugs.

What else could be causing oil to appear in this hose ? Or is the only option a failing AOS diaphragm and cap

Compression tests done...All in good range.170 153.

Still have a lot of oil in crankcase breather hose.

Inspected diaphragm in AOS and there are no cracks ,splits or holes...Cleaned it all up.

Checked for vacuum leaks...None noticed , Even sprayed with CRC

What can cause this oil in breather hose.. I noticed it's dirty around AOS and also where hoses go into to valve covers on each side .

Engine is running rich and some smoke for few minutes after start up. Smoke is white and not coolant smell.. smells of fuel and just a strong stinks exhaust. 

Plugs were pretty black and seem to be carbon as they were dry but had an oil smell... 

I am so darn confused her now...

What is the air flow direction between the AOS and and throttle body ( this is where the crankcase breather hose with the oil in it is..)

Any help would be appreciated.

Looking for a part number and where to buy AOS for 2004 Porsche Cayenne S v8

New coils just put in 1700 miles ago.

Just Pulled plugs  today which I put in same time I did coils.. #8 was black with crusty black deposits on it ,. Assume oil.

That's why I am thinking AOS is bad.

No real smoke at exhaust other than normal start up on cold day. No blue smoke and using around 1 quart of oil per 600-700 miles which I believe is normal.

Thank you for your help.